I'm surprise, I'm use two boards: one with a MC9S12DP512 and the other with a MC9S12A256B.
I have make a program to use the SCI and PLL module of the microcontroller.
The program work fine on the MC9S12DP512 but don't run on the MC9S12A256B.
if I use only the PLL module it's OK.
If I use only the SCI module it's OK
But if I use the twice it's not OK
Can you help me to solve this problem??